A woman in preterm labor at 30 weeks of gestation receives two 12 mg doses of betamethasone (Celestane) intramuscularly. The purpose of this pharmacologic treatment is to:
Reduce maternal and fetal tachycardia associated with terbutaline administration.
Suppress uterine contractions.
Stimulate fetal surfactant production.
Maintain adequate maternal respiratory effort and ventilation during magnesium sulfate therapy.
The Correct Answer is C
Betamethasone is a corticosteroid that enhances fetal lung maturity, which can help reduce the risk of respiratory distress syndrome and other complications in preterm infants. It does not reduce maternal and fetal tachycardia associated with terbutaline administration, suppress uterine contractions, or maintain maternal respiratory effort and ventilation during magnesium sulfate therapy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A history of cesarean section for fetal distress is an indication for a repeat cesarean section in subsequent pregnancies, as the risk of recurrence of fetal distress is higher. A trial of labor after cesarean (TOLAC) may be attempted in some cases, but a planned cesarean section is often recommended.
Option B is incorrect because fear of natural childbirth is not a medical indication for a cesarean section.
Option C is incorrect because gestational diabetes does not typically require a cesarean section unless other complications arise, such as fetal macrosomia or failed induction of labor.
Option D is incorrect because a history of cephalopelvic disproportion with the first pregnancy may not necessarily require a cesarean section in subsequent pregnancies. A trial of labor may be attempted, depending on the circumstances.
Correct Answer is C
Explanation
The nurse recognizes that a nonstress test (NST) in which two or more fetal heart rate (FHR) accelerations of 15 beats/min or more occur with fetal movement in a 20-minute period is considered reactive. A reactive NST is a reassuring sign of fetal well-being and indicates that the fetal nervous system and cardiovascular system are intact and functioning appropriately. If a reactive NST is not obtained, further testing or evaluation may be necessary to assess fetal well-being.
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